Functions/Get-JaccardDistance.ps1
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function Get-JaccardDistance { <# .SYNOPSIS Get the Jaccard Distance between two strings. .DESCRIPTION The Jaccard distance, which measures dissimilarity between sample sets, is complementary to the Jaccard coefficient and is obtained by subtracting the Jaccard coefficient from 1, or, equivalently, by dividing the difference of the sizes of the union and the intersection of two sets by the size of the union .EXAMPLE Get-JaccardDistance 'karolin' 'kharolin' .LINK http://en.wikipedia.org/wiki/Jaccard_index https://communary.wordpress.com/ https://github.com/gravejester/Communary.PASM .NOTES Author: Øyvind Kallstad Date: 03.11.2014 Version: 1.0 Dependencies: Get-JaccardIndex #> [CmdletBinding()] param ( [Parameter(Position = 0, Mandatory)] [ValidateNotNullOrEmpty()] $a, [Parameter(Position = 1, Mandatory)] [ValidateNotNullOrEmpty()] $b, # Makes matches case-sensitive. By default, matches are not case-sensitive. [Parameter()] [switch] $CaseSensitive ) try { # calculate the jaccard distance $jaccardDistance = 1 - (Get-JaccardIndex $a $b -CaseSensitive:$CaseSensitive) Write-Output $jaccardDistance } catch { Write-Warning $_.Exception.Message } } |